/**
 * Copyright 2011 By Shayne, Zhang.
 * 
 * The contents of this file are developped by Shayne, Zhang. You may visit:
 * http://www.shaynez.com for more details.
 *
 */
package com.shaynez.ec;

/**
 * @author shayne zhang
 *
 */
public class Calculator {
	
	private Calculator cal = null;
	
	private Calculator(){
		
	}
	
	public Calculator getInstance(){
		if(cal == null){
			cal  = new Calculator();
		}
		return cal;
	}
}
